Stropping device.



D. B. PERKINS.

STROPPING DEVICE.

APPLICATION FILED APR. 9, m7.

1,243,972 Patented Oct. 16,1917.

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D. B. PERKINS STROPPING DEVICE.

APPLICATION FILED APR-9.1917.

' Patented Oct. 16,1917.

2 SHEETS-SHEET 2.

DAINIEL B. PERKINS, OF PROVIDENCE, RHODE ISLAND.

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Specification of Letters Patent. Patented Oct. 16, 1917.

Application filed April 9, 1917. Serial No. 160,645.

To all whom it may concern:

Be it known that I, DANIEL B. PnRKINs, a citizen of the United States, residing at Providence, in the county of Providence and State of Rhode Island,*have invented certain new and useful Improvements in Stropping Devices, of which the following is a specification.

My invention relates to a device for holding the blades of safety razors'while being stropped.

T he essential objects of my device are the capacity to operate upon both a double edged blade and asingle edged blade; to permit the revolution or reversing of the blade without removing the same from the holder; to afiord a feathery contact of the blade with the strop; to insure a uniform contact or pressure of the blade upon the strop; to facilitate the insertion or removal of a blade from the device; and to attain these advantages in a structure simple and inexpensive to construct, and facile to opcrate.

To the above ends essentially my invention consistsin such parts and combinations of parts as fall within the scope of the appended claims.

In the accompanying drawings which form a part of this specification Figures land 2 are front and end elevations respectively of my novel device,

Figs. 3 and 4, similar elevations respectively of the device with the parts distended, 7

Figs. 5 and 6, top and bottom plan views respectively of the same,

Fig. 7, a longitudinal central section of the device in operative position,

F i 8, a transverse section on line 88 of Fig.

Fig. 9, a longitudinal central section of the device in distended position, v

Fig. 10, a transverse section on line 1010 of Fig. 9,

Fig. 11, a section on line 11--11 of Fig. 9,

Fig. 12, an end elevation of the blade holding member, V

Figs.'l3 and 14, a plan and side elevation respectively of the same, and

' Fig. 15, an end elevation of the device shown'engaging a portion of a razor strop. Like reference characters indicate like parts throughout the views. a

My device in its present and preferred construction consists of a holder comprising base.

an oblong-block or body 16 provided with concave side faces 17, fiat ends 18, and a con vex or rounded base or bottom face 19. This body is provided in its upper portion with arectangular, oblong, chamber or recess 20 extending nearly to the ends of the body from the ends of which extend vertical guide openings 21 terminating in the The base is preferably slightly recessed as at 22 and in this recess is fixed by a screw 23, at its central portion, a leaf spring 24:with depending free ends. Fixed to the surface of the member 16 at the bottom of the recess or chamber 20 by a screw 26 or otherwise is a metal strip or plate 27 having integral with its ends slightly diverging Vertically disposed resilient arms 28 pro vided with reduced neck portions 29 near their free ends forming finger pieces 30 which project above the top of the member 16, and resultant shoulders 31.

Pivotally mounted upon the lower portion of the holder is a frame 32 which, in this instance, comprisesv two relatively yielding sections similar in all respect, so that a clescription of one will serve for both. Each section comprises end walls 33 connected by a longitudinally disposed narrow side wall 34. The end walls overlap each other and are provided in their upper overlapping portions with holes 36 registering with each other through which pass pivot pins or screws 38 which enter the end faces of the holder near its bottom and hold the por tions 33 in slidable contact with each other thereon. To prevent collapse of the frame sections, a stop pin 40 is located in one side wall 33 at each end of the holder adjacent the free end of the overlapping side wall. The stop pins are held in contact with their respective sections by the downward pressure of flat springs 42 fixed in the holder transversely thereof. The laterally extending free ends of these springs rest on the upper edges ofthe walls 34. These springs are two in number, located near each end of the holder. In the present instance, these springs are located in transverse channels 44 in the holder having V-shaped central portions as at 45, as shown in Fig. 10, to accommodate intermediate V-shaped bends 46 in the springs. to prevent the latter from accidental escapes Mounted in openings 48 in the end walls 33 adjacent the sides 34 are parallel longitudinally disposed bearing rollers 49 in the same horizontal plane,

adapted to continuously contact "with a strop 51.

The support or frame forthe blade to be sharpened comprises an oblong plate or yoke 52 provided near its ends with circular openings 53 through which project the finger ip'iec'es 30. The necks 29 of the latter rest in the outer margins ofthe openings in locked position when the arms 28 are distended. That is to say, the shoulders 31 abut against the'bottom of plate 52, and the sides ofthe members 29 above their necks abut against the upper face of theplate. Integ'ra'l with the ends ofthe plate or bar 52 are depending legs 51 which pass through theguide openings 21 and terminate in outwardly directed lugs or feet 56. One leg has a 'central opening 57 above the foot,ancl the second leg has a similar circularopening 58, from which extends an inclined mar ginal slot 59. The openings in the legs are to receive the carrier member for the blade to be sharpened, which member comprises an upper plate 60 and lower plate 61 integralv itl each other at one end and having their other ends free. Near their connected ends each plate has oppositely directed fingers 63; and there are'similar fingers 64=near the free ends of the plates. There are also like fingers 65at the extremities of the plates. The described carrier member, represented in a general way bythe reference numeral 66,-is removable from the legs,

Normally the carrierhas its ends extending through-the openings 57 and 58 with the lower platefil restingon the feet 56. The

several lateralfingers serve not only to pre-. vent escape of the member longitudinally, but also aifordan increased bearing area upon'the blade 67 which is clamped therebetween. In Fig. 12 is shown the angle as- Sumedby the member 66 as it is'being passed to its seat in the legs 54, or is being manually rotatedto reverse the face of a-blade carried therein. r V a In operating my device, the'blade '67 is insert-ed between the clampingplates GO and 61 either before or after the-member 66 has been introducedinto its support, the parts being positioned as shown in Fig. 9. 'lhe operator then elevatesthe'frame or supportby rearwardlypressing against the feet 56. Whenthe plate 52 in its advancereaches a point to override the shoulders 31 of the arms 2S,'the latter spring outwardly across their openings 53 and lock the parts inthe position shown in Fig. 7. During the described upward movement of the support, the .plate 60 contacts with the spring 24 wherebythe plates'GO'and 61 areclamped upon the-blade 67. 'lVhen theparts'have been thus'locl-zed in normal or operating posit-ion, the holder 16 isgrasped by the operator who rests the rollers t9=upon the strep 51 and vibrates the device back and forth along *the strop. Since the holder '16 with which the blade is rigid, is tiltable relatively to the frame-32it will be noted that when the blade is double edged the bottoin bevels of both edges will alternately contact with the strop as the device is v1- brated. During this movement,'th'e Walls 33 perform the function of guides for the stro'p. It will benoted by reference to Fig. 15 that when the device is moving in the direction of the arrow and the holder is tilted to the right, the right han d section of the "frame 32 yields upwardly slightly. "When the device is oppositely tilted and moving in the directionopposite to thearrow, the left hand frame section yields somewhat. The yielding relation of, the

frame sections makesit possible to attain 'clined. Fairly acceptable results are attained when the sections arenon-y1eldmg relatlv'ely'to each other.

perfect results even whenthe strop is in- WVhen'theilower bevels of a double edged Obviously my device will accommodate and sharpen'a'blade with a single edge, as Well as a blade having a double edge.

The holder or bloclg'16 maybe any form of frame either solid or otherwise best adapted 'to carry :the operative parts.

Other means of applying the principles of my invention maybe employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided themeans stated by the appended claims or the equivalent of such stated means, be employed.

'1. In a stropping device, the combination of a block, a blade-carrier onthe block, a yieldable frame'to which said block isipivoted adjacent the-carrier, said block being rigid with the'blade carrier and constituting the operating handle, and bearingmenr bers'on the frameandby contact of which with the strop said frame is relatively fined.

2. In a stropping device,;the combination of a yieldable supporting frame adaptedto rest upon a strep, a. block pivotally connected therewith, a blade carrier on the block, said-block being rigid with'the carrier and constitutingth-e operating handle, said block being'tiltable relatively to the frame.

In a stropping device, the combination .ing made of independently yieldable sections.

4. In astropping device, the combination of a support ng frame adapted torest upon a strep, a block pivotally connected therewith, a blade carrieron theblock,.said block being rigid with the carrier and constituting the operating handle, said block being tiltable relatively to the frame, said frame being made of independently yieldable sections, said blade carrier-being movable rela tively to the block.

5. In a stropping device, the combination of a block, a blade carrier mounted upon the block, pairs of diverging plates pivotally embracing the block, and bearing members connecting the free ends of the plates at opposite sides of the carrier.

6. In a stropping device, the combination of a block, a blade carrier upon the bottom of the block, a frame comprising pairs of oppositely disposed laterally projecting sections pivotally mounted upon the ends of the block, and bearing members in the sections.

7. In a stropping device, the combination of a block, a blade carrier upon the bottom of the block, a frame comprising pairs of oppositely disposed laterally extending sec- 'tions pivotally mounted upon the ends of the block, and yielding arms on the block resting upon the sections.

8. In a stropping device, the combination of a block, a blade carrier upon the bottom of the block, a frame comprising pairs of oppositely disposed laterally extending sections pivotally mounted upon the ends of the block, stop pins on one section in the path of the other section, and resilient arms on the block engaging the sections.

9. In a stropping device, the combination of a block, a blade carrier mounted upon the bottom of the block, and two oppositely disposed frame sections pivotally mounted upon the block and pivotally connected to each other surrounding the carrier.

10. In a stropping device, the combination of a block, a blade carrier mounted upon the bottom of the block, oppositely disposed guide plates pivotally mounted upon the ends of the block and extending below the blade carrier, and bearing members upon the plates at opposite sides of the blade carmen 7 11. In a stropping device, the combination of a block, a supporting frame slidably mounted in the block, said block being tiltably mounted and constituting the operating handle, and a blade carrier mounted in the frame andua frame to which said block is pivoted.

12. In a stropping device, the combination of a block,.a-supporting frame mounted in the block, a blade carrier detachably mounted in the frame, and yieldingbearing sections upon the block surrounding the carrier.

13. In a stropping device, the combination of a block, a supporting frame slidably mountedin the block, a blade carrier rotatably mounted in the framelexterior of the block and a bearing frame noon the block surrounding the carrier.

14.]:11 a stropping device, the combination of a block, a supporting frame slidably mountedin the block and extending below the bottom of the block, a blade carrier comprising resilient superimposed plates mounted in the frame exterior of the block, and a spring upon the block engaging the plates.

15. In a stropping device, the combination of a block provided with a longitudinally disposed recess, and with vertical guideways at the ends of the recess, aframe comprising a cross bar in the recess, and legs on the bar slidable in the guideways extending below the block, a blade carrier mounted in the arms below the block, and means upon the block engaging the bar for locking the frame against movement.

16. In a stropping device, the combination of a block provided with a longitudinally disposed recess, and with vertical guideways at the ends of the recess, a frame comprising a cross bar in the recess, and legs on the bar slidable in the guideways, a blade carrier mounted in the arms, and resilient locking arms upon the block engaging the bar.

17. In a stropping device, the combination of a block provided with a longitudinal recess, and with guideways, a frame comprising a cross bar provided with spaced openings in the recess, and legs on the bar slidable in the guideways extending below the block, a blade carrier loosely mounted in the arms exterior of the block, diverging compressible arms fixed to the block Within the recess extending through the openings in the bar, and shoulders on the arms supporting the bar.

18. In a stropping device, the combination of a block, a supporting frame slidably mounted in the block comprising a cross bar, and vertical legs upon the cross bar normally extending below the block, both legs being provided with openings near the bottom, and one leg being provided with an open slot extending to the opening, a blade carrier comprising flat plates connected with each other at one end only mounted in the openings, and a spring upon the block intermediate the blade carrier and the block.

19. In a stropping device, the combination of a block, a supporting frame slidably mounted in the block comprising legs, outwardly turned lugs upon the legs exterior of the blockfsaid legs being provided with openings exterior of the block, a blade carrier comprising resilient plates connected at one end and pivotally mounted in the legs, a spring upon the block adapted to contact withthe carrier, and means in the block engaging the frame for clamping the carrier against the spring.

20. In a stropping device, the combination of a block, a supporting frame slidably mounted in the block comprising a cross Copies of this patent may be obtained for oblong plates connected to each other vat one end resting loosely in the openings, lateral lugs upon the plates near their connected ends adjacent one of the legs, lateral lugs near'the free ends of the plates adjacent the second leg, and lateral finger pieces upon the free ends of the plates at the opposite side of the last mentioned leg.

In testimony whereof I have atiiXed my 7 signature.

DANIEL B, PERKINS;

five cents each, by addressing. the Commissioner of Patents, Washington, D. O. V 

